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📄 BUGREPORTS(746 B)
📄 CHANGES(67.56 KB)
📄 COPYING(17.67 KB)
📄 COPYING.OpenSSL(6.13 KB)
📄 DEVELOPMENT(8.99 KB)
📄 EXAMPLES(17.01 KB)
📄 FAQ(3.75 KB)
📄 PORTING(3.02 KB)
📄 README(11.47 KB)
📄 SECURITY(1.81 KB)
📄 daemon.sh(903 B)
📄 ftp.sh(4.12 KB)
📄 gatherinfo.sh(4.03 KB)
📄 mail.sh(2.02 KB)
📄 proxy.sh(1.99 KB)
📄 proxyecho.sh(1.2 KB)
📄 readline-test.sh(1.26 KB)
📄 readline.sh(764 B)
📄 socat_buildscript_for_android.sh(3.5 KB)
📄 socks4a-echo.sh(2.52 KB)
📄 socks4echo.sh(2.31 KB)
📄 test.sh(456.32 KB)

Editing: mail.sh

#! /bin/sh
# source: mail.sh
# Copyright Gerhard Rieger and contributors (see file CHANGES)
# Published under the GNU General Public License V.2, see file COPYING

#set -vx

# This is an example for a shell script that can be fed to socat with exec.
# Its clue is that it does not use stdin/stdout for communication with socat,
# so you may feed the mail message via stdin to the script. The message should
# contain appropriate mail headers without continuation lines.
# socat establishes the connection to the SMTP server; the script performs the
# SMTP dialog and afterwards transfers the message body to the server.
# Lines with only a dot are not permitted - use two dots as escape.
# This script supports multiline answers from server, but not much more yet.

# Usage:  cat message.txt |socat exec:"mail.sh target@domain.com",fdin=3,fdout=4 tcp:mail.relay.org:25,crlf

while [ "$1" ]; do
    case "$1" in
    -f) shift; mailfrom="$1"; shift;;
    *) break;;
    esac
done

rcptto="$1"
[ -z "$1" ] && rcptto="root@loopback"
#server=$(expr "$rcptto" : '[^@]*@$.*$')
[ -z "$mailfrom" ] && mailfrom="$USER@$(hostname)"

# this function waits for a complete server message, checks if its status
# is in the permitted range (terminates session if not), and returns.
mail_chat () {
    local cmd="$1" 
    local errlevel="$2";  [ -z "$errlevel" ] && errlevel=300

if [ "$cmd" ]; then  echo "> $cmd" >&2;  fi
    if [ -n "$cmd" ]; then echo "$cmd" >&4; fi
    while read status message <&3;
	(
	    case "$status" in
	    [0-9][0-9][0-9]-*) exit 0;;
	    [0-9][0-9][0-9]*) exit 1;;
	    *) exit 1;;
	    esac
	)
    do :; done
    if [ -z "$status" ]; then  echo smtp connection failed >&2; exit;  fi
    echo "< $status $message" >&2
    if [ "$status" -ge "$errlevel" ]; then
	echo $message >&2
	echo "QUIT" >&4; exit 1
    fi
}

# expect server greeting
mail_chat

mail_chat "HELO $(hostname)"

mail_chat "MAIL FROM: $mailfrom"

mail_chat "RCPT TO: $rcptto"

mail_chat "DATA" 400

while read l; do echo "$l" >&4; done
mail_chat "."

mail_chat "QUIT"

exit 0

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Editing: mail.sh

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